Bed and cylinder drive for printing-presses.



M. A. DROITCOUR.

BED AND CYLINDER DRIVE FOR PRINTING PRESSES.

M. A. DROITCOUR.

BED AND CYLINDER nmvs FOR PmNnNe PRESSES.

APPLICATION FILED IAN. IB, I9I5 r 1,171,843. Patented Feb. 10,1916.

4 SHEETS-SHEET 2.

M. A. DROITCOUR.

BED AND CYLINDER DRIVE FOR PRINTING PRESSES.

APPLICATION FILED IAN.18, 1915.

Patented Feb. 15, 1916.

4 SHEETS-SHEET 3.

INVENTOR. my. 00mm,

NI. A. DROITCOUR.

BED AND CYLINDER DRIVE FOR PRINTING PRESSES.

APPLICATION FILED IAN. 18, I9I5.

1,171,843. I Peeeneed Feb.15,1916.

4 SHEETS-SHEET 4.

IIIIIIIIIIIIIIIIII" \/I!I'T'NI`LSSESZA INVENTOR.

@5%. @@MQIQWM- MIcnAEL A nnorrcoun, or nELrHos, onro.

Specication of Letters Patent.

BED AND CYLINDER DRIVE FOR PRINTING-PRESSES.

Patented Feb. 15, 1916.

Application led January 18, 1915. Serial No. 2,964.

To all lwhom t may concern:

Be it known that I, MICHAEL A. DRoiT- COUR, a citizen ofthe UnitedStates, and a resident of Delphes, in the county of Van Vert and Stateof Ohio, have invented a certain new and 'useful Bed and lCylinder`Drive for Printing-Presses; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings and to thecharacters of reference A marked thereon, which form a part ofthisspecication.

This invention relates to means for synchronizing the movements of thecylinders and beds of printing presses during predetermined portions ofthe movements thereof.

The primary object of my invention is the provision of a novel and imroved mechanism of the character' described, which is operable to drivethe hed during a portion of each stroke of uniform speed with thecylinder, and to slow down and stop the bed at the end of each stroke,after which it is started back with accelerating speed until it is againtraveling at uniform cylinder speed.

Further objects and advantages of the invention will be apparent fromthe following detailed description thereof.

l The invention is fully described inthe following specification, andwhile, in its broader aspect, it is capable of embodiment in numerousforms, a preferred embodiment thereof is illustrated in the accompanyingdrawings, in which,-

Figure 1 is a side elevation of a mechanism embodying my invention withparts broken away. Fig. 2 is a section thereof on the line /v-o inFig. 1. Fig. 3 is an enlarged section on thev line w--fw in Fig. 1. Fig.4 is a longitudinal vertical section on the line in Fig. 2 with partsbroken away, and Fig. 5 is a perspective view of the mechanism withparts broken away and in section and with one side portion separatedfrom theremaining parts to disclose parts of the mechanism which wouldotherwise be ob-v scured. l

Referring to the drawings, 1 designates a press frame which is providedlongitudinally thereof between its sides with a plurality of rails 2(three in the present instance),

the top surfaces of which slidingly support and guide the reciprocatorymovements of a runner frame 3. Mounted on the runner` frame 3 forreciprocatory movements relative thereto lengthwise of the frame 1 isthe form bed 4, which travels under a cylinder 5, the shaft 6 of whichis suitably j ournaled in bearing blocks-7 in the upper portions ofthe-frame sides. The bed 4 is provided on the underside thereof with aplurality of runners 8, which rest upon the runner 3 and travel inrespective guide-ways 9 therein.

The cylinder bearings blocks 7 are vertically adjustable in therespective frame sides to permit a raising and lowering of the cylinder5 at predetermined points in each cycle of operations of the presswhereby the cylinder will have contact with a type form on the bed 4during movements of the bed in one direction only, as is Well understoodin the art.

Each bearing. block 7, in the present instance, is yieldingly supportedby a rod 10 the lower end of which rests upon a coiled compressionspring 11 suitabl mounted in the frame side.` Each block 7, is alsoconnected by rods 12, 12 to a subjacent bearing block 13, which isguided for vertical movements within an opening 14 in the lower ortionof the associated frameJ side and orms the lower bearing or illow blockfor an end of a rock-shaft 15, w ich is mounted transversely of theframe beneath the cylinder 5. The upper thrust of each end of the shaft15 is opposed by an impression adjustment block 16, which is mounted forvertical adjustment in the frame side. The rockshaft 15 has the portionsof its ends, which are in bearing contact with the blocks 13 and 16,provided with semi-circular cam bearing surfaces which, upon a rockingof the shaft,A

i 13 and cylinder 5 under the action of the spring 11.

A The cam-shaft 15 is provided with a rocker-arm 17, which is connectedby a rod 18 to a lever member 19, which is vertically disposed andpivoted at its lower end to a frame part 20. The lever 19 is providedintermediate its ends with a roller 21 that travels in a cam groove 22on a side of a spur gear 23, which gear is mounted on a shaft projectingfrom a'bearing arm 24 of the frame. The gear 23 meshes with and isdriven by a small gear 25 on the main drive shaft 26 of the mechanism.The drive shaft 26 is journaled transversely of the frame in suitablebearings therein and carries a belt pulley 27 at one end without theframe 1, if it is desired to utilize a belt drive for the shaft.

While l have shown and described a particular form of mechanism forintermittently raising and lowering the cylinder, it will be understoodthat such mechanism considered alone forms no part of the presentinvention and that the only purpose of showing the same herein is toillustrate one mechanism for controlling the raising and lowering of thecylinder.

The gear 23 carries a crank-pin 28 on the side thereof opposed to thecam groove 22,

' and such crank-pin in turn carries a block 29, which has reciprocatorymovements in a vertical slide-way 30 that is provided on the runner 3.It is thus evident that a rotation of the gear 23 will impart positivepredetermined reciprocatory movements to the runner 3 through the mediumof the slide-block 29 and slide-way 30, and also that upon a reversal ofeach stroke of the runner' 3 its speed will be accelerated to maximumspeed and then slowed down and stopped preparatory to reversing itsstroke, as is well understood in the art, such movement and manner ofeifecting the same being old in connection with printing presses of thebed and cylinder type.

The runner 3 carries, in the present in stance, a pair of pinions 31,one near each side thereof, and each of these pinions meshes at itslower side with a fixed rackbar 32 attached to the side of the adjacentframe-rail 2, and meshes at its upper side with a rack-bar 33 on theunder side of the bed 4. It is thus evident that the bed 4 will becaused to have reciprocatory movements with the runner 3 and that eachstroke of the bed 4 will be twice the length of the corresponding strokeof the runner 3. For instance, should the throw of the crankpin block 29on the gear 23 be suiiicient to impart an eighteen inch stroke to therunner 3, the rack and pinion connection 31, 32 and 33 between therunner and bed 4 would cause the bed to have a thirty-six inch stroke.

low the runner 3 is a shaft 34, which carries a gear segment 35 at eachside of the runner 3 in mesh with a rack-bar 36 on the respective` sideof the runner, said rack-bars .being disposed to overhang the respective1,171,134iev segments 35, as shown, while the member 35 .is referred toas a gear segment it will be `gear 37 being loose on the shaft and thegears 38 and 39 being keyed thereto. The gear 37 is shown, in thepresent instance, as being lloosely mounted on a sleeved end. ofthehub-gear 38, as shown in Fig. 3. The gear 38 has a pin 40 projectingtherefrom and carrying a block 41, which is mounted for free movement ina segmental slot 42 in the gear 37 for the purpose hereinafterdescribed. The gears 37 and 39 are driven by pinions 43 and 44,respectively, on the drive shaft 26, and the gear 39 is slightly largerthan the gear 37 and is provided at a predetermined point in itsperiphery with a gap 39 whereby the drive pinion 44 is freed fromdriving connection with the gear 39 during a portion of each cycle ofmovements of the mechanism.. The drive pinion 43, von the other hand,remains -inpermanent mesh with the gear 37 and edects a constant drivingof such gear. The gear `38 meshes p with and drives a Vgear 45 on theshaft of the cylinder 5, said gears 38 and 45 being in the proportion oftwo to one to impart a double rotation to the cylinder 5 at eachcomplete rotation of the gear 38.

The pinion 44 may be considered as a r0- tatable part, receiving itspower from any suitable source, and is so termed Iin some of the claims.

The gap 39a of the gear 39 is so positioned period the bed and cylinderwill be caused to have synchronous movements due to both receiving thelrmovements from the movements vof the runner 3-the bed through the imedium of the racks and pinions 31, 32 and 33, and the cylinder throughthe rack-bars 36, segments 35, shaft 34 and gears 38 and 45. There will,however, during this period of uni-form movement of thebed and cylinderbe a sli ht difference in rotation between the gears 3 and 39 due to thegear 37 being.

driven at a constant speed from the shaft 26'while the gear 39 is drivenat a varying speed from the movement of the runner 3. This difference inmovement between the gears 37 and 39 is permitted by reason of the block41 of the gear 38, which latter gear is in IiXed connection with the ear39, moving in the slot 42 ofthe gear 3 Inasmuch as the speed of rotationof the gear 39, when driven from the runner 3, is more rapidthan thespeed of rotation of the gear 37,

the block 41 will move forward in the slot 42, the length of such slotbeing so proportioned that the block will move in contact with theforwa-rd end wall thereof at the time the segments and rack-bars 36 moveout of mesh. The pinion 44 by this time will have traversed the gap 39a,and at approximately the instant of disconnecting of the segments 35 andracks 36, will move into mesh with the teeth of the gear 39 at thefinishing end of the gap. The contacting of the block 41 with theforward end wall of the slot 42 at approximately the instant of movinginto mesh of the pinion 44 and gear 39 causes a lining up or registeringof the gears 37 and 39 so that there will be no clash between the teethof the pinion 44 and gear 39 as they move into mesh.

In order that the block 41 may be returned to the rear end of the slot42 when the gear 39 is being driven by the pinion 44, the gear 39 isslightly larger than the gear 37, thus causing it to be driven at aslightly slower vspeed than the constantly driven gear 37.

The contacting. of the block 41 with the rear end wall of the 'slot 42is timed to take place at approximately the instant the pinion 44 passesfrom' engagement with the teeth of the gear 39 and' at the instant ofinitial engaging of the segments 35 with the rackba'rs 36, thereby.effecting such a lining up or 'registering of the differentially movablesegment 35 and rack-bars 36 that there will be no clash between theteeth thereof as'they move 'into engagement.

From the foregoing, it will "be apparent that the gear 37 has nofunction as a driving member for any of the movable parts of themechanism, but acts solely` as a registering member which coacts twicein each cycle of operation of the mechanism with the gear 38 through themedium of the block 41 and slot 42, to effect a registering of the teethof the pinion 44 and gear 39 as they move into mesh, and a registeringof the teeth of the segments 35 and rack-bars 36 as they move into mesh,at different points in a cycle of movement of the gears.

In the operation of my improved mechanism, it will be understood thateach of the gears 23, 37, 38 and 39 make one complete revolution foreach cycle of operations of the press, or, in other words, at each tworevolutions of the cylinder 5, and the drive pinions 25 and 43 areproportioned accordingly with respect to the gears with which' theymesh. lt will thus be understood that both the gears 23 and 37 areconstantly driven at a fixed speedv from the drive-shaft 26. The gear 23in addition to taking care of the properly timed raising and loweringmovements of the cylinder 5 to move it into and out of impressionposition also imparts a variable reciprocatory movement to the runner 3.The variable reciprocatory movement which is imparted to the runner3 iscommunicated to the bed 4 through the pinions 31 and rack-bars 32 and 33whereby the bed is moved synchronously with the runner 3, but has itsstrokes double Ithe length of the strokes of said runner. When the bed 4during the impression stroke thereof has moved approximately toimpression position, the pinion 44 will enter the gap 39x71 of its gear,thus disengaging said gear, and the segments 35 will move into initialengagement 4 with the respective racks 36 and remain in engagement withsuch racks until the bed has reached the end of the impression receivingportion of its stroke.

The engaging of the segments 35 and racks 36 and the disengaging of thepinion 44 with its gear 39 causes a driving of the cyl- 'inder from themovement of the runner 3 proximately the same time so that the pinion 44will commence its driving action on the gear 39 instantly' upon 'thedisengaging of the segments35 with their racks. At approximately theinstant of initial engaging of the segments 35 with the respectiverackbars 36, the block 41 will make contact with the rear end wall ofthe slot 42 in the registering gear 37 and properly register the gears37 and 38 so that the segments will 105 move smoothly into mesh with theracks 36 withoutiany clash of the teeth thereof. The driving of thegears 33 and 39 from the runner 3 during the impression portion of thebed stroke causes said gears tov rotate more rapidly than the gear 37and edects a consequent advancing of the block 41 in the slot 42 of thegear 37. This advance Yis suiiicient to cause the block 41 to move intocontact with the forward end wall of theslot 42 at approximately theinstant of disengag` ing of the segments 35 with theA racks 36 and theengaging of the pinion 44 with the gear 39 at the finishing end of thegap 39a thereof to effect'a proper registering of the 120 gears 37 and39 so that the' pinion 44 will move smoothly into engagement with theteeth of the gap-gear. .The slight enlarging of the gap-gear 39 and thereducing of the pinion 44 over the gear 37 and pinion 125 43,respectively, causes the gap-gear, when drivenby its pinion, to'rotate alittle slower than the gear 37 and effect a return of the block 41 tothe rear endof the gear slot 42,

this relative rotation beingso proportioned that the block 41 will moveinto contact with the rear end of the slot 42 at approxi mately theinstant of disengaging of the pinion 44 with the gap-gear 39 and theengaging of the segments 35 with the racks 36, for the purposehereinbefore described.

It is evident that I have provided a sim ple and eiicient mechanism fordriving the cylinder and bed at different speeds during portions of thestrokes of the bed and for automatically eecting a driving connectionbetween the bed and cylinder at a predetermined point in a movement ofthe bed, and maintaining such connection and a consequent uniform speedof drive of the bed and cylinder during a predetermined portion of onestroke of the bed at each cycle of operations of the press.

It is also evident that the drive pinion 44, gears 38, 39 and 45 form ameans for communicating rotation to the cylinder 5 from the source ofpower which, in the present instance, may be considered as the shaft 26;that the rack and pinion or segment 35 and 36, shaft 34 and gears 38 and45 form a separate means for communicating rotation to the cylinder fromthe bed driving means of which latter the slide 3 forms a part, and thatsaid separate cylinder driving means have parts in common, namely thegears 38 and 45.

I wish it understood that my invention is not limited to any specificconstruction, arrangement or form of the parts, as numerousmodifications of the mechanism and the parts thereof may be made Withoutdepartinfr from the spirit of the invention.

aving thus described my invention, what I claim 'as new, and desire tosecure by Letters Patent, is

1. In combination, a reciprocatiory bed, a' rotatable cylinder, meansfor imparting reciprocatory movements to the bed, means forintermittently driving the cylinder, and means independent of the bedand periodically'operable through a portion of said cylinder drivingmeans to drive the cylinder from said bed driving means synchronouslywith the movement of the bed.

2. In combination, drive means, a reciprocatory bed, a rotatablecylinder, means actuated by said drive means for reciprocating said bed,means independent of the bed and operable to periodically connect saidbed driving means with said cylinder to cause the cylinder to rotate ata speed which is synchronous to' the movement of the bed during apredetermined portion of its move-- ment, and means operable inconjunction with a part of said cylinder driving means todrive thecylinder when not being driven from the bed driving means.

3. In combination, a reciprocatory bed, a rotatable cylinder, means forreciprocating said. bed, means operable by said bed reciprocating meansto periodically drive said cylinder at a speed which is synchronous witha portion of the movement of said bed, said 4cylinder driving meanshaving in part a pair of coacting gears, and means operable to drivesaid coacting gears to rotate 5. In combination, a reciprocatory bed,

a rotatable cylinder, drive means for said bed, means for driving saidcylinder at one speedduring a portion of a cycle of operations, andmeans independent of the bed operable in conjunction with a part of saidcylinder driving means and actuated by said bed driving means fordriving the cylinder synchronously with the bedduring a portion of themovement of the latter and when said first mentioned cylinder drivingmeans is disconnected.

6. In combination, a reciprocatory bed, a rotatable cylinder, drivemeans for said bed, means periodically operable to drive said cylinderfrom said bed driving means to cause a synchronous movement of thecylinder and bed, said cylinder driving means having rack and pinionparts which engage at a predetermined point in a cycle of operations,and means operable through a part of said cylinder driving means todrive the cylinder when not being driven from the bed driving means.

7. In combination, a reciprocatory bed, a rotatable cylinder,I beddriving mea-ns, a rotatable drive part, and means operable independentlyof the bed to periodically' conneet said cylinder with first one andthen the other of said bed driving means and part to impartpredetermined rotation at intervals to said cylinder.

8. In combination, a reciprocatory bed, a rotatable cylinder, beddrivlng means, a rotatable drive part, and' means periodically operableto connect irst lone end and `then the other of said bed driving meansand drive part with said cylinder, the connection between said beddriving means and cylinder being independent of the bed and causing thecylinder to have a movement synchronous to the bed movement. f-

9. In combination, a reciprocatory bed, a rotatable cylinder, a `driveshaft, means having connection with and driven bysaid shaft forimparting predetermined reciprocatory movements to said bed, and mecha--ing connection with said cylinder first through one and then the otherof said shaft and bed driving means independent of the bed, the bed andcylinder having synchronous movements when the cylinder is being drivenfrom the bed driving means.

10. In combination, a reciprocatory bed,

a rotatable cylinder, a primary drive means,

a bed driving means connected to and driven from said prlmary means, andmechanism operable to periodically close the driving` connections tosaid cylinder rst through one and then the other of said primary and beddriving means independently of the bed, the bed and cylinder havingsynchronous movements when the cylinder is being driven from said beddriving means.

11. In combination, a reciprocatory bed, a rotatable cylinder, a primarydriving means, a bed driving means having connection with and drivenfrom said primary means, a shaft, a plurality of gears connecting saidshaft and cylinder for communicating rotation from one to the other, agap-gear on said shaft, a pinion driven by said primary means andmeshing with said gap-gear whereby said shaft is intermit-y tentlydriven from said primary means through the pinion and gap-gear, andmeans operable to drive said shaft from said bed driving means when thedriving of the shaft by said primary means is interrupted.

12. In combination, a reciprocatory bed, a rotatable cylinder, beddriving means, mechanism for periodically driving said cylinder, meanshaving rack and segment parts acting through a part of said mechanismand operated by said bed driving means to drive the cylinder at a speedsynchronous to the movement of the bed when the cylinder driving actionof said mechanism is interrupted, and means operable to register theperiodically engaging parts of Said cylinder driving means and mechanismto prevent clash as they move into engagement.

13. In combination, a reciprocatory bed, a rotatable cylinder, a primarydrive means, a bed driving means connected to said primary means, meansindependent of the bed operable to alternately connect the cylinder withfirst one and then the other of said primary and bed driving means, andmeans for registering said cylinder driving means with the respectivecoacting driving parts of said primary and bed driving means to preventclash therebetween as they respectively engage said cylinderdrivingmeans.

14. In combination, a reciprocatory bed, a rotatable cylinder, beddriving means, a shaft, a cylinder-gear and a gap-gear xed to saidshaft, connection between said cylinder-gear and cylinder, means forintermittently driving said gap-gear, and means for driving said shaftfrom said bed. driving means when the driving of said gap-gear isinterrupted.

15. In combination, a reciprocatory bed, a rotatable cylinder, beddriving means, a shaft, connection between said shaft and cylinder forcommunicating rotation from one to the other, a gap-gear carried by saidshaft, means for intermittently driving said gap-gear, means forcommunicating rotation to said shaft from said bed driving means whenthe driving of said gap-gear is interrupted, and means for effecting aregis-` tering of said gap-gear and the drive means therefor and aregistering of the parts of said shaft driving means when theyrespectively move into driving connection.

16. In combination, a reciprocatory bed, a rotatable cylinder, a driveshaft, a driven shaft, means for driving said bed from a rotation ofsaid drive shaft, connection between said driven shaft and .cylinder fordriving one from the other, a gap-gear iixedly carried by and aregistering gear loosely carried by said driven shaft, means actuated bysaid drive shaft for continually driving said registering gear at 4aconstant speed and for intermittently driving said gap-gear, rack andsegment means operable to communicate rotation to said driven shaft fromsaid bed driving means when the .driving of said gap-gear isinterrupted, and means coperating with said registeringgear to cause aregistering of the parts of said rack and segment means when they moveinto engagement.

17. In combination, a reciprocatory bed, a rotatable cylinder, a primarydriving means, means for driving said bed from said primary means,separate means having parts in common for alternately communicatingrotation to said cylinder from said primary driving means and said beddriving means, means for registering the parts of said cylinder drivingmeans which periodically make and break communication.

18. In combination, a reciprocatory bed, a rotatable cylinder, a primarydriving means, means for driving said bed from said primary means,separate cylinder driving means having parts in common for alternatelymaking and breaking nection first with said primary driving drivingconmeans and then with said hed driving means,

and means having a part continually'driven at a constant speed by saidprimary means and operable to register the separable parts of saidcylinder driving means as theyre- 'iso gears` and forming shaft, aregistering gear loose on said shaft, drive pinions for said registeringand gapparts of said rimary riving means, sai gap-gear'being 'Herent insize from said registering gear, rack and segment means operable toengage and to impart rotation to said shaft from movements of said beddriving means when the gap-gear is inactive by reason of its drivepinion traversing the gap thereof, and means connecting said registeringgear and shaft for registering the gap-gear and its drive pinion whenthey move into engagement and for registering the rack and segment partsof said shaft driving means when they move into engagement 20. Incombination, a reciprocatory runner member, means for driving saidmember, a bed carried by said member for reciprocatory movementsrelative thereto, means for communicating relative reciprocatozrymovements to said bed from said member, a rotatable cylinder, mechanismoperable to communicate interrupted rotation to said cylinder, and meanshaving parts in common with said mechanism and operable to communicaterotation to the cylinder from said member when the driving of thecylinder by said mechanism is interrupted.

21. In combination, a reciprocatory runner member, a bed reciprocallmovable relative to said member, means or driving said. runner member,means for communieating relative reciprocatory movements to said bedfrom said member, mechanism operable to communicate interrupted rotationto said cylinder, and means having rack and pinion parts in common withsaid mechanism for imparting rotation to the cylinder from movements ofsaid runner member when the driving vof the cylinder by said mechanismis interrupted.

22. In combination, a reciprocatory runner member, means for drivingsaid niember, a bed carried by said member for. reciprocatory movementsrelative thereto, means for imparting reciprocatory movements to saidbed from lesser reciprocator movements of said member, a rotatable cyinder, a shaft, means connecting said shafty and cylinder for impartingrotation from one to the other, means for imparting interrupted rotationto sald shaft, and means loperable to connect said shaft and runnermember to communicate movement from one to the other when the driving ofthe shaft by said rst mentioned shaft driving means is interrupted.

23. In combination, a reciprocatory runner member, means for impartingreciprocatory movementsto said member, a bed reciprocally movablerelative to said member, means for communicating movements to said bedfrom movements of said member, a rotatable cylinder, a shaft, connectionbetween said shaft and cylinder for imparting rotation from one to theother, a gap-gear fixed to said shaft, a drive pinion for said gapear,means having rack and segment gears or interengaging and connecting saidmember and shaft to drive the shaft from said member when said pinion istraversing the gap in the gap-gear. Y

24. In combination, a reciprocatory runner member, means for drivingsaid member, a reciprocatory bed, means for imparting movements to saidbed from said runner member, a rotatable cylinder, a shaft, connectionbetween said shaft and cylinder for imparting rotation from one to theother and separate means for alternately driving said shaft to impartcontinuous rotation thereto, one of said shaft driving means havingconnection with and operable by a reciprocation of said runner member.

25. In combination, a reciprocatory runner member, drive means for saidmember, a bed mounted over said runner member for reciprocatorymovements relative thereto, means for imparting relative reciprocationto said bed from said member, a rotatable cylinder, a shaft, connectionbetween said shaft and cylinder for communicating rotation from one tothe other,

separate means for operating in alternate.

order to impart continuous rotation to said shaft, one of said meansbeing actuated by movements of said runner member, and l'means operableto register the parts of said separate shaft driving means when theyrespectively move into driving connection.

26. In combination, a reciprocatory runner member, drive means for saidmember, a bed mounted for reciprocatory movements over said runnermember and relative thereto, means for imparting reciprocatory movementsto said bed from said runner member, the strokes of the bed being longerthan .the strokes of said member, a rotatable cylinder, separate meanshaving parts in common and being alternately operable to impartcontinuous rotation` at variable speeds to said cylinder, one of saidseparate means being periodicallyactuated by said runner member to causethe cylinder to have uniform movements with said bed during the periodof driving of the cylinder from said member.

27. In combination, a reciprocatory runner member, drive means for saidmember, a bed mounted for reciprocatory movements over said .runnermember and relative thereto, means for imparting reciprocatory movementsto said bed from said runner member, the strokes of the bed being longerthan ythe strokes of said member, a rotatable cylinder, separate mea-nshaving parts in common and being alternately operable to impartcontinuous rotation at variable speeds to said cylinder, one of saidseparate have uniform movements with said bed during the period ofdriving of the cylinder from said member, and means automaticallyoperable to positively register interengaging parts of each of saidseparate cylinder driving means as they respectively move into cylinderdriving engagement.l

28. In combination, a reciprocatory runner member, a bed mounted forreciprocatory movements 'relative to said member,

meansfor driving said bed from movements of said member, a rotatablecylinder, a drive means, means connecting said drive means to saidcylinder and operable to impart interrupted rotation thereto, meansactuated by said member and having parts in common with said lastmentioned means to drive said cylinder when the' driving of the same bysaid drive means is interrupted, and means automatically operable toregister the di'erent parts of the respective cylinder driving means asthey move into driving connection.

29. In combination, a reciprocatory runner member, a bed movable by saidmember Y relative thereto, a rotatable cylinder, means having separableparts which are operable to periodically engage and connect said memberand cylinder to impartI movement from one to the other thereof, andmeans automatically operable to register the separable parts of saidconnecting means as they move into driving engagement.

30. In combination, a reciprocatory runner member, a bed movable by saidmember relative thereto, a rotatable cylinder, means for connecting saidmember and cylinder and having rack and pinion parts which periodicallyengage and break engagement to effect an intermittent driving of thecylinder by said member, and means for registering the rack and pinionparts of said connecting means as they move into engagement.

31. In Combination, a reciprocatory member having a series of rack teethlengthwise thereof, a bed movable by. said member relative thereto, ashaft, a pinion rotatable with said shaft and adapted to periodicallyengage with and be driven bythe rack teeth on said member, arotatable'cylindenconnection between said shaft andl cylinder for;

imparting rotation from one to the other, and means for registering theteeth of said pinion and member as they move into driving engagement.

32. In combination, a rotatable cylinder, a drive shaft, a driven shaft,means connecting said drive shaft and. cylinder through said drivenshaftand having parts which periodically make and break connection vtocommunicate intermittent rotation to the cylinder through a continuousrotation of municating rotation `from said drive shaft to said cylinderand carried in part by said driven shaft, said gears being operable tomake and break connection between said drive shaft and cylinder tointerrupt the driving of the cylinder, a gear loosely carried by saiddriven shaft and having pin and slot connection with one of said gearswhereby the gears so connected are permitted to have limited relativerotation, and a pinion carried by said drive shaft and acting tocontinuously drive and coperate with said loose gear to effect aregistering of said make and break gears as they move into drivingconnection.

34. In combination, a driven shaft, a gap gear and a continuous toothgear fixedly carried by said shaft and one being larger than the other,a loose gear carried by said shaft and having a segmental slot, a partmovably projecting into said gear slot and standing in fixed relation tothe gears which are fixed to said shaft, a cylinder, connection betweensaid continuous toothed gear and said cylinder, a drive shaft, andpinions on said drive shaft, one for driving said gap gear and the otherfor driving said slotted gear, said slotted gear and part cooperating toact on said gap gear to register the teeth thereof with the respectivepinion teeth when moving into register at the finishing end of the geargap.

35. In combination, a rotatable cylinder, a shaft, gears connecting saidshaft and cylinder for imparting rotation from one to the other, agap-gearon said shaft, adrive pinion for said gap-gear, and meansindependently of the teeth of said gears and automatically operable toregister the teeth ofl said pinion and gap-gear as they move. intoengagement at the finishing end ofthe gear'- a-p. 36. Irl-combination, areciprocatorymem'- f llO ber having a series of longitudinally eX- driveinions impartin differential rotation to said registering an gap-gearsand saidfirst mentioned pinion and rack teeth imparting reversedifferential rotation to said registering and gap-gears and beingoperable-to have driving engagement one with the other when the gap gearand its pinion are disengaged, and means automatically operable by thedifferential movements imparted to said registering and gap-gears bysaid rack teeth and pinion to place the teethv of the gap-gear and itspinion in register when moving into engagement and operable by thedifferential movements imparted to pression receiving position, andmeans periodically operable by therunner part of said mechanism tocommunicate rotation to said cylinder from said mechanism when thecylinder driving connection oi said first means is interrupted.

38. In a printing press of the class described, a reciprocatory runnermember, a bed reciprocally movable on said runner member,I a rotatablecylinder over said bed,

mechanism for communicating reciprocatory movements to said runnermemher,neans for periodically raising and lowering said cylinder toplace it into and out of impresion position with respect to the bed,means for communicating reciprocatory movements to said vbed frommovements of said member, means operable to drive said cylinder and toperiodically break its driving connection therewith, and means havingparts in common with said cylinder driving means and operable by saidrunner member at predetermined points in its reciprocatory movement todrive said cylinder when its driving connection with said first cylinderdriving means is broken, whereby the cylinder is caused to have uniformmovements with the bed during a portion of its impression stroke.

39. In combination, a reciprocatory bed, a rotatable cylinder, primarydrive means, a bed driving means connected to and driven from saidprimary means, said bed driving means having a reciprocally movable partwhich moves at a speed differential to the bed speed, and mechanismindependent of the bed operable to periodically close the drivingconnection. to said cylinder first through said primary means and thenthrough the reciprocatory part of said bed driving means, the bed andcylinder having movements in unison when the cylinder is being drivenfrom said bed driving means.

In testimony whereof, I have hereunto signed my name to thisspecificationin the presence of two subscribing witnesses.

MICHAEL A. DROITCOUR.

Witnesses:

N. R. WILLIAMS, M. F. WEGER.

